The population of a city is 400000 . If it increases at the rate of 20% per annum, find the population of the city after Three years.
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Step-by-step explanation:
20 p.c=20× 400000/100
20 p.c = 80000
in 3 years extra population =3×80000=240000
city population =400000+240000
population =640000
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